As was earlier threatened, California officials are leading a coalition of 17 states and the District of Columbia in suing the Environmental Protection Agency to preserve the nation’s single vehicle emission standard.

 “The evidence is irrefutable: today’s clean car standards are achievable, science-based and a boon for hardworking American families. But the EPA and Administrator Scott Pruitt refuse to do their job and enforce these standards,” said California Attorney General Xavier Becerra. “Enough is enough. We’re not looking to pick a fight with the Trump administration, but when the stakes are this high for our families’ health and our economic prosperity, we have a responsibility to do what is necessary to defend them.”